nftables vs iptables in 2026: Complete Comparison & Migration Guide
A comprehensive comparison of nftables and iptables for Linux firewall management in 2026. Learn the key differences, when to migrate, and get our free 6-page cheat sheet PDF....
Expert tutorials, guides, and tips on Linux, DevOps, and IT Administration
A complete, no-fluff walkthrough of CCNA 200-301: Complete Study Notes โ twelve exam-aligned modules, 50+ diagrams, hands-on labs, and two full practice exams that take you from networking fundamentals to exam-ready....
A focused, eight-volume curriculum that teaches absolute beginners the Linux skills that actually matter โ the command line, files, scripts, packages, networking, monitoring, security, and the daily work of administration. One volume per concept, in order, with no jargon and no detours....
A practical, opinionated 2026 roadmap to take you from "I have never opened a terminal" to "I run hardened Linux servers in production." Eight books, three stages, one straight line โ and a study schedule you can actually finish in twelve weeks....
A comprehensive comparison of nftables and iptables for Linux firewall management in 2026. Learn the key differences, when to migrate, and get our free 6-page cheat sheet PDF....
Master Ubuntu from installation to production server deployment. Complete guide covering desktop and server editions, package management with APT, snap packages, system administration, security hardening, networking, cloud integration with Ubuntu Pro, and best practices for developers and sysadmins....
Master NGINX from installation to production deployment. Complete guide covering server blocks, reverse proxy, load balancing, SSL/TLS with Let's Encrypt, security headers, rate limiting, performance tuning, and Docker deployment with practical examples....
Students and self-learners get 30% off every eBook at Dargslan with code STUDENT30. No verification needed. Choose from 200+ professional IT books on Linux, Python, DevOps, cloud, security, and more. Plus access 141+ free cheat sheets and 160+ blog tutorials....
Dargslan celebrates publishing its 200th eBook! From Linux administration to AI, cloud computing to cybersecurity, explore our complete catalog of 200 books across 44 categories, plus 141 free cheat sheets and 160+ blog articles....
Master Debian 13 Trixie from installation to production deployment. Complete guide covering APT package management, systemd services, nftables firewall, SSH hardening, NGINX + PHP-FPM setup, Docker, PostgreSQL, and automated backups with practical examples and commands....
Master PostgreSQL in 2026: learn SQL queries, data types, joins, indexes, JSONB, functions, triggers, security, backup, replication, and performance tuning with practical examples and a free 20-page PDF cheat sheet....
Configure Linux firewalls with iptables and nftables. Learn packet filtering rules, port management, NAT configuration, rate limiting, and security best practices....
Master Python in 2026: learn variables, data types, OOP, modules, file I/O, testing, async programming, type hints, and best practices with practical code examples and a free 20-page PDF cheat sheet....
Welcome to the Dargslan Tech Blog โ long-form, hands-on articles for engineers who run real systems in production. We publish every week on Linux administration, DevOps tooling, cloud architecture, cybersecurity, Python automation, Windows Server, and the practical day-to-day skills that separate junior sysadmins from senior platform engineers. Every post is written by working professionals, includes copy-pasteable code and configuration files, and is updated whenever upstream tools release breaking changes.
There is no shortage of tech blogs on the internet, but most fall into one of two traps: shallow listicles written by people who have never touched the tools, or 30-page corporate whitepapers designed to sell a product. Our articles sit in the middle โ long enough to actually solve your problem, short enough to read with a coffee, and always grounded in working examples you can run in your own terminal. We don't write filler, we don't gate content behind email forms, and we never publish AI-generated slop without expert review.
Our writers come from a sysadmin, SRE, and DevOps background and have shipped production systems for fintech, healthcare, telco, and SaaS companies across Europe and North America. When you read a tutorial here, you're reading what someone actually did at 2am during an incident โ not a sanitized vendor case study.
Subscribe to our RSS feed, follow the tech news section, or grab the daily IT tip for a steady stream of practical knowledge. If long-form learning is more your style, our companion eBook library covers every topic from this blog in 200-500 page depth, with downloadable code repositories and lifetime updates.